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#1
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I'm not really up on the 4 strokes, but they say over propping a 4 stroke causes this. You lug the engine, carbon builds up, and then the rings start leaking down and you make oil. I would reccomend doing a heavy dose of ring free and making sure you're propped so that at wide open you reach the upper spectrum of the reccomended max rpm's, or even a little over.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD ![]() AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 |
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#2
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stuck thermostat,engine stays in warm up mode running rich, excess gas gets past the rings. Check/replace the thermostats. If they are good, check the injectors, sounds like one or mare may be sticking open. Plugs will probably all be black
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#3
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Thank you for your input gentlemen much appreciated
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93 V-21 200/9.9 Yamaha |
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#4
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Quote:
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93 V-21 200/9.9 Yamaha |
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#5
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can they be cleaned? i have injectors cleaned all the time, send them to Injector RX in Texas, or Flagship Marine in Fl, $28 per injector
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